rfc2229.txt

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        503 Command parameter not implemented
        530 Access denied
        531 Access denied, use "SHOW INFO" for server information
        532 Access denied, unknown mechanism
        550 Invalid database, use "SHOW DB" for list of databases
        551 Invalid strategy, use "SHOW STRAT" for a list of strategies
        552 No match
        554 No databases present
        555 No strategies available

8.  Sample Conversations

   Theses are samples of the conversations that might be expected with
   a typical DICT server.  The notation "C:" indicates commands set by
   the client, and "S:" indicates responses sent by the server.  Blank
   lines are included for clarity and do not indicate actual newlines
   in the transaction.









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8.1.  Sample 1 - HELP, DEFINE, and QUIT commands

C: [ client initiates connection ]

S: 220 dict.org dictd (version 0.9) <[e-mail]>


C: HELP

S: 113 Help text follows
S: DEFINE database word            look up word in database
S: MATCH database strategy word    match word in database using strategy
S: [ more server-dependent help text ]
S: .
S: 250 Command complete


C: DEFINE ! penguin

S: 150 1 definitions found: list follows
S: 151 "penguin" wn "WordNet 1.5" : definition text follows
S: penguin
S:   1. n: short-legged flightless birds of cold southern esp. Antarctic
S:      regions having webbed feet and wings modified as flippers
S: .
S: 250 Command complete


C: DEFINE * shortcake

S: 150 2 definitions found: list follows
S: 151 "shortcake" wn "WordNet 1.5" : text follows
S: shortcake
S:   1. n: very short biscuit spread with sweetened fruit and usu.
S:      whipped cream
S: .
S: 151 "Shortcake" web1913 "Webster's Dictionary (1913)" : text follows
S: Shortcake
S:    \Short"cake`\, n.
S:    An unsweetened breakfast cake shortened with butter or lard,
S:    rolled thin, and baked.
S: .
S: 250 Command complete


C: DEFINE abcdefgh

S: 552 No match



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C: quit

S: 221 Closing connection

8.2.  Sample 2 - SHOW commands, MATCH command

C: SHOW DB

S: 110 3 databases present: list follows
S: wn "WordNet 1.5"
S: foldoc "Free On-Line Dictionary of Computing"
S: jargon "Hacker Jargon File"
S: .
S: 250 Command complete


C: SHOW STRAT

S: 111 5 strategies present: list follows
S: exact "Match words exactly"
S: prefix "Match word prefixes"
S: substring "Match substrings anywhere in word"
S: regex "Match using regular expressions"
S: reverse "Match words given definition keywords"
S: .
S: 250 Command complete


C: MATCH foldoc regex "s.si"

S: 152 7 matches found: list follows
S: foldoc Fast SCSI
S: foldoc SCSI
S: foldoc SCSI-1
S: foldoc SCSI-2
S: foldoc SCSI-3
S: foldoc Ultra-SCSI
S: foldoc Wide SCSI
S: .
S: 250 Command complete


C: MATCH wn substring "abcdefgh"

S: 552 No match






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8.3.  Sample 3 - Server downtime


C: [ client initiates connection ]

S: 420 Server temporarily unavailable


C: [ client initiates connection ]

S: 421 Server shutting down at operator request


8.4.  Sample 4 - Authentication

C: [ client initiates connection ]

S: 220 dict.org dictd (version 0.9) <[e-mail]>


C: SHOW DB

S: 110 1 database present: list follows
S: free "Free database"
S: .
S: 250 Command complete


C: AUTH joesmith authentication-string

S: 230 Authentication successful


C: SHOW DB

S: 110 2 databases present: list follows
S: free "Free database"
S: licensed "Local licensed database"
S: .
S: 250 Command complete




9.  Security Considerations

   This RFC raises no security issues.




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10.  References

   [ASCII] US-ASCII. Coded Character Set - 7-Bit American Standard
        Code for Information Interchange. Standard ANSI X3.4-1986,
        ANSI, 1986.

   [FOLDOC] Howe, Denis, ed.  The Free On-Line Dictionary of
        Computing, <URL:http://wombat.doc.ic.ac.uk/>

   [ISO10646] ISO/IEC 10646-1:1993. International Standard --
        Information technology -- Universal Multiple-Octet Coded
        Character Set (UCS) -- Part 1: Architecture and Basic
        Multilingual Plane.  UTF-8 is described in Annex R, adopted
        but not yet published.  UTF-16 is described in Annex Q,
        adopted but not yet published.

   [JARGON] The on-line hacker Jargon File, version 4.0.0, 25 JUL
        1996, <URL:http://www.ccil.org/jargon/>

   [KNUTH73] Knuth, Donald E. "The Art of Computer Programming",
        Volume 3: Sorting and Searching (Addison-Wesley Publishing
        Co., 1973, pages 391 and 392). Knuth notes that the soundex
        method was originally described by Margaret K. Odell and
        Robert C. Russell [US Patents 1261167 (1918) and 1435663
        (1922)].

   [PZ85] Pollock, Joseph J. and Zamora, Antonio, "Automatic spelling
        correction in scientific and scholarly text," CACM, 27(4):
        Apr. 1985, 358-368.

   [RFC640] Postel, J., "Revised FTP Reply Codes", RFC 640, June,
        1975.

   [RFC821] Postel, J., "Simple Mail Transfer Protocol", STD 10,
        RFC 821, August 1982.

   [RFC822] Crocker, D., "Standard for the Format of ARPA Internet
        Text Messages", STD 11, RFC 822, August 1982.

   [RFC977] Kantor, B., and P. Lapsley, "Network News Transfer
        Protocol: A Proposed Standard for the Stream-Based
        Transmission of News", RFC 977, February 1986.

   [RFC2045] Freed, N., and N. Borenstein, "Multipurpose Internet
        Mail Extensions (MIME) Part One: Format of Internet Message
        Bodies", RFC 2045, November 1996.





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   [RFC1738] Berners-Lee, T., Masinter, L. and M. McCahill, "Uniform
        Resource Locators (URL)", RFC 1738, December 1994.

   [RFC1760] Haller, N., "The S/KEY One-Time Password System",
        RFC 1760, February 1995.

   [RFC1985] Freed, N., and A. Cargille, "SMTP Service Extension for
        Command Pipelining", RFC 1854, October 1995.

   [RFC1939] Myers, J., and M. Rose, "Post Office Protocol - Version 3",
        STD 53, RFC 1939, May 1996.

   [RFC2044] Yergeau, F., "UTF-8, a transformation format of Unicode
        and ISO 10646", RFC 2044, October 1996.

   [RFC2068] Fielding, R., Gettys, J., Mogul, J., Frystyk, H.,
        and T. Berners-Lee, "Hypertext Transfer Protocol -- HTTP/1.1",
        RFC 2068, January 1997.

   [RFC2078] Linn, J., "Generic Security Service Application Program
        Interface, Version 2", RFC 2078, January 1997.

   [RFC2222] Myers, J., "Simple Authentication and Security Layer
        (SASL)", RFC 2222, October 1997.

   [WEB1913] Webster's Revised Unabridged Dictionary (G & C. Merriam
        Co., 1913, edited by Noah Porter).  Online version prepared by
        MICRA, Inc., Plainfield, N.J. and edited by Patrick Cassidy
        <[e-mail]>.  For further information, see
   <URL:ftp://uiarchive.cso.uiuc.edu/pub/etext/gutenberg/etext96/pgw*>,
        and
   <URL:http://humanities.uchicago.edu/forms_unrest/webster.form.html>

   [WORDNET] Miller, G.A. (1990), ed. WordNet: An On-Line Lexical
        Database. International Journal of Lexicography. Volume 3,
        Number 4.  <URL:http://www.cogsci.princeton.edu/~wn/>















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11.  Acknowledgements

   Thanks to Arnt Gulbrandsen and Nicolai Langfeldt for many helpful
   discussions.  Thanks to Bennet Yee, Doug Hoffman, Kevin Martin, and
   Jay Kominek for extensive testing and feedback on the initial
   implementations of the DICT server.  Thanks to Zhong Shao for advice
   and support.

   Thanks to Brian Kanto, Phil Lapsley, and Jon Postel for writing
   exemplary RFCs which were consulted during the preparation of this
   document.

   Thanks to Harald T. Alvestrand, whose comments helped improve this
   document.

12.  Authors' Addresses


   Rickard E. Faith
   EMail: [e-mail] (or [e-mail])


   Bret Martin
   EMail: [e-mail]

   The majority of this work was completed while Bret Martin was a
   student at Yale University.
























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13.  Full Copyright Statement

   Copyright (C) The Internet Society (1997).  All Rights Reserved.

   This document and translations of it may be copied and furnished to
   others, and derivative works that comment on or otherwise explain it
   or assist in its implmentation may be prepared, copied, published
   andand distributed, in whole or in part, without restriction of any
   kind, provided that the above copyright notice and this paragraph are
   included on all such copies and derivative works.  However, this
   document itself may not be modified in any way, such as by removing
   the copyright notice or references to the Internet Society or other
   Internet organizations, except as needed for the purpose of
   developing Internet standards in which case the procedures for
   copyrights defined in the Internet Standards process must be
   followed, or as required to translate it into languages other than
   English.

   The limited permissions granted above are perpetual and will not be
   revoked by the Internet Society or its successors or assigns.

   This document and the information contained herein is provided on an
   "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
   TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
   BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
   HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
























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